Vibrational Frequencies calculated at PBEPBE/aug-cc-pVTZ
| Mode Number |
Symmetry |
Frequency (cm-1) |
Scaled Frequency (cm-1) |
IR Intensities (km mol-1) |
Raman Act (Å4/u) |
Dep P |
Dep U |
| 1 |
A |
2979 |
2959 |
4.44 |
|
|
|
| 2 |
A |
2147 |
2134 |
59.33 |
|
|
|
| 3 |
A |
1236 |
1228 |
10.36 |
|
|
|
| 4 |
A |
896 |
890 |
182.60 |
|
|
|
| 5 |
A |
681 |
677 |
9.89 |
|
|
|
| 6 |
A |
188 |
187 |
0.00 |
|
|
|
| 7 |
E |
3058 |
3038 |
5.56 |
|
|
|
| 7 |
E |
3058 |
3038 |
5.56 |
|
|
|
| 8 |
E |
2155 |
2141 |
121.86 |
|
|
|
| 8 |
E |
2155 |
2141 |
121.88 |
|
|
|
| 9 |
E |
1411 |
1402 |
2.75 |
|
|
|
| 9 |
E |
1411 |
1402 |
2.75 |
|
|
|
| 10 |
E |
918 |
912 |
27.33 |
|
|
|
| 10 |
E |
918 |
912 |
27.33 |
|
|
|
| 11 |
E |
854 |
849 |
57.49 |
|
|
|
| 11 |
E |
854 |
849 |
57.48 |
|
|
|
| 12 |
E |
501 |
497 |
7.94 |
|
|
|
| 12 |
E |
501 |
497 |
7.94 |
|
|
|
Unscaled Zero Point Vibrational Energy (zpe) 12959.0 cm
-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 12874.8 cm
-1
See section
III.C.1 List or set vibrational scaling factors
to change the scale factors used here.
See section
III.C.2
Calculate a vibrational scaling factor for a given set of molecules
to determine the least squares best scaling factor.
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ
Charges (e)
| Number |
Element |
Mulliken |
CHELPG |
AIM |
ESP |
| 1 |
C |
-0.630 |
|
|
|
| 2 |
Si |
0.658 |
|
|
|
| 3 |
H |
0.182 |
|
|
|
| 4 |
H |
0.182 |
|
|
|
| 5 |
H |
0.182 |
|
|
|
| 6 |
H |
-0.192 |
|
|
|
| 7 |
H |
-0.192 |
|
|
|
| 8 |
H |
-0.192 |
|
|
|
Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section
VII.A.3)
| |
x |
y |
z |
Total |
| |
0.000 |
0.000 |
-0.828 |
0.828 |
| CHELPG |
|
|
|
|
| AIM |
|
|
|
|
| ESP |
|
|
|
|
Electric Quadrupole moment
Quadrupole components in D Å
| Primitive |
| | x | y | z |
| x |
-23.215 |
0.000 |
0.000 |
| y |
0.000 |
-23.215 |
0.000 |
| z |
0.000 |
0.000 |
-23.435 |
|
| Traceless |
| | x | y | z |
| x |
0.110 |
0.000 |
0.000 |
| y |
0.000 |
0.110 |
0.000 |
| z |
0.000 |
0.000 |
-0.220 |
|
| Polar |
| 3z2-r2 | -0.440 |
| x2-y2 | 0.000 |
| xy | 0.000 |
| xz | 0.000 |
| yz | 0.000 |
|
Polarizabilities
Components of the polarizability tensor.
Units are
Å
3 (Angstrom cubed)
Change units.
| |
x |
y |
z |
| x |
6.425 |
0.000 |
0.000 |
| y |
0.000 |
6.425 |
0.000 |
| z |
0.000 |
0.000 |
7.625 |
<r2> (average value of r
2) Å
2
| <r2> |
50.857 |
| (<r2>)1/2 |
7.131 |